Brad Goldstein, a spokesman for Bill Koch, the billionaire commodities investor and wine collector, was decidedly underwhelmed by Mr. Depp’s expenditures. “Bill Koch sold a case of 1945 Mouton Rothschild at auction last year for $400,000,” he said. If Mr. Depp’s agents were “trying to show excess, they’re in the wrong place,” added Mr. Goldstein, noting it costs a lot more than $30,000 a month to “seriously” invest in first-growth Bordeaux.